Thumb splint

ummagumma Member Posts: 2
I have just been told I have Osteoarthritis of the Carpometacarpal cmc joint and the Metacarpophalangeal MP joint.
Can you recommend a suitable thumb splint please? I really need one that will give me firm support but light enough to be able to do my job. I am a engineer and need reasonable movement. I have tried a cheap one that has helped a bit.

Thanks in advance